Visited in 2006 & 2007. There are two small waterfalls at this park. Wolf Creek Falls appears to be accessible from either
the main park or from Robinson Park in Sandstone. When I attempted to access it from the latter, a large pile of rocks obstructed
the journey. Instead I drove back to the park and walked along a series of trails to reach it. Not sure if things have improved
in the time since I was there. The second waterfall, Big Spring Falls, is accessed by going to I-35 exit 191 and taking MN
123 to east on Minnesota St and then south on Pine Ave. There is a small parking area and a short trail that leads to the
river. The Quarry Loop Trail is also interesting. A pamphlet was available at the beginning of the trail with information
on each of the markers along the way.

Here is a picture of the quarry house:

Big Spring Falls (right next to it is a neat little indented area perfect for sitting)